It was close enough that it mattered, four years to be precise. If it had been decades ago it likely would have been a different matter.
Dutch proverb: High trees catch a lot of wind.
If you become a high tree, in politics or as a CEO then your past will come under scrutiny, and what is found there may very well have a direct effect on your present day life.
It's "close enough" only because you're trying to save face from your incorrect implication/claim you've repeated several times across different comments in this thread that he was the CEO when he did the donation.
It's also worth pointing out that public opinion has swung decisively and dramatically in that intervening time period--at least 20 percentage points IIRC.
It's close enough because right up until his apology Eich did not indicate in any way shape or form that he had changed his views on this. Only after it all blew up did he come with his apology. Sure, he wasn't CEO at the time he made his donation but when he stepped forward to become CEO he was well aware of his own position regarding this and knew that to effectively lead Mozilla would be impossible given his - apparently strongly held - views. At least, I'm assuming people do not donate to political causes they do not feel strongly about.
Dutch proverb: High trees catch a lot of wind.
If you become a high tree, in politics or as a CEO then your past will come under scrutiny, and what is found there may very well have a direct effect on your present day life.